Hamamelididae is a botanical name at the rank of subclass. A well-known system that used this name is the Cronquist system, although in the disallowed spelling Hamamelidae. In the original 1981 version of this system the circumscription was:

• subclass Hamamelidae

  order Trochodendrales

  order Hamamelidales

  order Daphniphyllales

  order Didymelales

  order Eucommiales

  order Urticales

  order Leitneriales

  order Juglandales

  order Myricales

  order Fagales

  order Casuarinales

As is true for any botanical name, circumscription of the subclass will vary with the taxonomic system being used; the only requirement being that it includes the family Hamamelidaceae. The APG II system that was adopted for the wikipedia Tree of Life (as in taxoboxes) does not use formal botanical names above the rank of order: within wikipedia this name is taxonomically undefined. APG II places most of the taxa involved in the rosids.

plant taxonomy | Magnoliopsida

Hamamelidae | Hamamelidae | Hamamelidae | Hamamelidae | Oczarowe | Hamamelidae | Phân lớp Phỉ